Wheel for roller skates



July 21 1925. 1546.735

5. KRAMER ET AL WHEEL FOR ROLLER SKATES Filed Feb. a, 1923 flq-i 23 1 19 2- F196.

5,4 #004 KIM/rim fa/xm/ilz/m/mgsr nveuto'aj A ggfbeir Gum/nu Patented July 21, l925.

1,546,735 tIlFFltfiE;

WHHEEL SKATES. V

. Application filed February 5, 1923. Serial No. 618,962.

To all whom may/concern:

lie it known that We, Snnnon linniunn and Joirn Mnnnar citizens of the United States, and residing at 29 Monroe Street and 35 Monroe Street, Passaic, New Jersey, respectively, have invented a new and useful Improvement in -Wheels for Roller Skates, of which the following is a speciiication. I

This invention relates to wheels for roller skates and has for its main object to provide a Wheel which is easilyand cheaply manufactured, assembled, put in place and which insures a reliable and silent working of the $211116.

Still a further object of this invention is to provide a wheel construction of the mentioned character which will facilitate the use of silent and durable materials, as rubber, fibre and other similar compositions in the working part of said wheel.

lViththe above mentioned and other objects in view, our wheel construction mainly consists in providing two identical and easily manufactured discs between which a ring of the rubber, fibre or other body of the wheel may be secured, said discs having cup shaped hubs cooperating with conical nuts on the shaft of the wheel, said cups and conical nuts forming the necessary runs for the balls on which said wheel is intended to rotate.

For a full description of the invention and the merits thereof and also to acquire a knowledge of the details of construction of the same for effecting the various results mentioned hereinbefore, reference is to be had to the following description and accompanying drawings.

While the essential and characteristic features of the invention are susceptible of modification, still the preferred embodiment of the invention is illustrated in the accompanying drawings, in which:

Fig. l is a side view of a roller skate on which our improved wheels are employed;

Fig. 2 is a cross'sectional view of our wheel, assembled and secured on the shaft of the roller skate;

Fig. 3 is aplan view of our assembled wheels, being shown in a smaller scale;

Fig. at is a plan View of the retaining disc used in our wheel construction; while Figs. 5 and 6 are fragmentary detail views of two modifications of our wheel construction.

Referring more closely to the drawings, the numeral 7 indicates the main body of the roller skate in general, having the shafts 8 secured underneatn the same by the sheet setal carrying members 9. Our improved wheels 10 are rotatably mounted on the ends of shafts 8. Each of our wheels is composed of two retaining discs 11 of entirely identical standard construction, making possible an easy and efficient manufacturing and assembling of our wheels.

is a conical cup 13 formed therein and in aperture 14: for the shafts 8 of the roller skates, Jermitting an easy and unhindered rotation of our wheels on said shafts. The main body of our wheels is composed of a heavy ring 16 preferably made of rubber or other durable elastic and silent mate rials, receiving the two discs 11 in its recesses 17 and being further secured to the same by the bolts 18. The outer ends of the shafts 8 carry screw threads 19 and two conical nuts 20 may be threaded on said shaft ends in exactly adjutsed positions so as to finish our wheel construction and pro vide the necessary runs for the balls 21, forming two ball bearings for each wheel. Said ball bearings, though showing the very simplest construction, are still adapted to elliciently take up both the axial and radial forces acting on our wheel. After adjusting said ball bearings by the turning of the outside conical nut 20, a lock nut 22 may be screwed on the shaft end 8 and the whole construction secured thereby, The outside cylindrical circumference 23 of our wheel may be left smooth or it may be knurled or grooved to insure a more efficient grip of the same. A portion of such a construction is shown in 5, while 6 shows in cross sectional view another modification of our wheel construction, whereby the same may be made of sheets of fibre or other materials. The elements 2d of our wheel in this con struction may be stamped out of such sheets in large quantities at a very small cost and assembled till any desired thickness of the wheel is obtained. The two outer elements 25 may be made somewhat heavier so as to permit the provision of the recesses 17 for the retaining discs 11.

The main advantages of our wheel construction for roller skates are that it has silent materials, like rubber, fibre and so on, for its working part and it is especially adapted to receive such materials, even The hub portion when said materials are prepared in laminated form, whereby different thicknesses of such wheels may be easily built. As to the mechanical advantages of this construction, it is built up of practically two main metallic parts which are the retaining discs and nuts and which can be manufactured in standardized forms in great quantities at a very normal expense, easily assembled to form the desired wheel. or taken apart to renew the Worn working portions of the same, and our wheel can be placed on any roller skates with the greatest facility and its ball bearings adjusted to an easy and reliable working.

What we claim as new and want to protect by Letters Patent of the United States is A roller skate wheel having lateral depressions to form shoulders, a pair of perforated hubs, one on each side of said Wheel,

circular flanges on said hubs snugly fitting into the depressions of said wheel and engaging said shoulders, a central opening in said wheel, inner shoulders formed on said hubs adapted to be engaged by the inner periphery of said wheel formed by said opening, outwardly opening conical cups formed with said hubs, a threaded shaft in the perforation of said hubs, conical nuts on said shaft near its outer ends, adapted to fit into said conical cups and be spaced therefrom to form ball-races with the same, outer flanges on said conical nuts adapted to engage the outer margins of said cups, and means on said shaft for holding the parts in their assembled position.

In testimony whereof, we have signed our names to this specification, this 29th day of January, 1923.

SANDOR KRAMER. JOHN MUNKACSY. 

